Abstract:
A polyolefin composition comprising:A) from 85.0 wt % to 99.5 wt %; A terpolymer containing propylene, ethylene and 1-hexene wherein:(i) the content of 1-hexene derived units ranges from 1.0 wt % to 5.0%;(ii) the content of ethylene derived units is comprised between 0.5 wt % and 10.0 wt %(iii) the melting temperature ranges from 130° C. to 145° C.;B) from 0.5 wt % to 10.0 wt %; of a propylene, ethylene copolymer composition comprising:b1) from 12 wt % to 52 wt %; of a propylene homopolymer or a propylene/ethylene copolymer having a content of ethylene derived units ranging from 0.1 wt % to 4.5 wt %; and having a xylene soluble content measured at 25° C. lower than 10 wt %;b2) from 48 wt % to 88 wt % of a propylene ethylene copolymer having a content of ethylene derived units ranging from 15.0 wt % to wt % to 42.0 wt %;wherein the resulting polyolefin composition has an melt flow rate (230° C./5 kg. ISO 1133) ranging from 0.2 g/10 min to 4.0 g/10 min; the sum A+B being 100 and the sum b1+b2 being 100.
Abstract:
A process for the preparation of propylene polymer compositions comprising from 50 to 90% by weight of a propylene (co)polymer fraction insoluble in xylene at 25° C., and from 10 to 50% by weight of an ethylene copolymer fraction soluble in xylene at 25° C., said process comprising: (i) a first step of polymerizing propylene in the optional presence of ethylene and/or C4-C10 alpha olefins, to produce a propylene (co)polymer being for at least 85% by weight insoluble in xylene at 25° C.; and (ii) a successive step, carried out in gas-phase, in the presence of the product coming from step (i), of copolymerizing a mixture of ethylene with one or more α-olefins CH2═CHR in which R is a hydrocarbon radical having 1-10 carbon atoms, to produce an ethylene copolymer; the process being carried out in the presence of a catalyst system comprising: the product obtained by contacting: (a) a solid catalyst component comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two internal electron donor compounds one of which being present in an amount from 35 to 90% by mol with respect to the total amount of donors and being selected from succinates and the other being selected from 1,3-diethers, the total amount of internal electron donor compounds being lower than 14.0% by weight with respect to the total weight of the solid catalyst component; with (b) an aluminum hydrocarbyl compound, and optionally with (c) an external electron donor compound.
Abstract:
Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor compound of the following formula (I) In which R to R12 groups, equal to or different from each other, are hydrogen, halogen or C1-C15 hydrocarbon groups, optionally containing an heteroatom selected from halogen, P, S, N and Si, with the proviso that R groups cannot be hydrogen and that the carboxylate groups are in trans configuration with respect to each other.
Abstract:
Liner for CIPP rehabilitation comprising a layer of thermoplastic polymer material, a resin absorbent layer, thermosetting hot curing-resin impregnating the absorbent layer; wherein said thermoplastic is a heterophasic polyolefin composition (I) having flexural modulus equal to or lower than 200 MPa, and comprising a crystalline propylene homopolymer (a); and a copolymer or a composition of copolymers of ethylene with other alpha-olefins (b) containing from 15% by weight to less than 40% by weight of ethylene.
Abstract:
Flexible highly filled polyolefin compositions with improved balance of properties particularly for applications where softness and ductility at low temperature is requested comprising a soft heterophasic polyolefin composition the fraction soluble in xylene at 25° C. of said polyolefin composition having IVgpc lower than 2.5 dl/g. Mw/Mn (GPC) equal to or higher than 4. Mz/Mw (GPC) equal to or higher than 2.5. Said polyolefin composition further comprising an inorganic filler (II) selected from flame-retardant inorganic fillers and inorganic oxides or salts and a further elastomeric polymer or polymer composition component (c) having flexural modulus (ISO 178) lower than 60 MPa, Shore A (ISO 868) lower than 90 and Tg (DMTA) lower than −20° C.
Abstract translation:柔性高填充聚烯烃组合物具有改善的性能平衡,特别是对于要求低温柔软性和延展性的应用,包括柔软的多相聚烯烃组合物,所述聚烯烃组合物在25℃下可溶于二甲苯的馏分具有低于2.5dl / g 。 Mw / Mn(GPC)等于或高于4.Mz / Mw(GPC)等于或高于2.5。 所述聚烯烃组合物还包含选自阻燃无机填料和无机氧化物或盐的无机填料(II)以及弹性体聚合物或聚合物组合物组分(c),其弯曲模量(ISO 178)低于60MPa,肖氏A( ISO 868)低于90,Tg(DMTA)低于-20℃
Abstract:
A polypropylene composition made from or containing: A) from 71 wt % to 91 wt % of a propylene homopolymer, B) from 5 wt % to 15 wt % of a copolymer of propylene and ethylene containing from 18 wt % to 32.0 wt % of ethylene derived units; and C) from 4 wt % to 15 wt % of a copolymer of propylene and ethylene containing from 75 wt % to 90.0 wt % of ethylene derived units.
Abstract:
A propylene polymer composition made from or containing: A) 65 to 95 wt % of a polypropylene composition having a MFR (230° C./2.16 kg) from 0.2 to 1.2 g/10 min, made from or containing (a) 15 to 45 wt % of a fraction made from or containing a propylene homopolymer, or a copolymer of propylene with ethylene or a CH2═CHR alpha-olefin, having a fraction insoluble in xylene at 25°° C. for at least 90 wt %; and (b) 55 to 75 wt % of a fraction made from or containing a copolymer of ethylene with propylene or CH2═CHR alpha-olefins, containing ethylene derived-units in a quantity lower than 40 wt %, and having solubility in xylene at 25° C. greater than 60 wt %, and (B) 5 to 35 wt % of recycled styrene block copolymer having a melt flow rate (190° C./2.16 Kg) from 0.5 to 15 g/10 min, wherein the propylene polymer composition having a MFR from 0.4 to 1.4 g/10 min.
Abstract:
A polypropylene-based resin composition made from or containing (A) a polypropylene-based resin including (a1) a continuous phase consisting of a propylene polymer and (a2) a rubber phase consisting of a copolymer of ethylene and an α-olefin having 3-10 carbon atoms.
Abstract:
A polyolefin composition made from or containing:
A) 5-35% by weight of a propylene ethylene copolymer; B) 20-50% by weight of an ethylene homopolymer; and C) 30-60% by weight of a terpolymer of ethylene, propylene and 1-butene derived units.
Abstract:
A catalyst for the polymerization of olefins made from or containing (a) a solid catalyst component containing Mg, Ti and optionally an internal electron donor compound (ID), (b) an aluminum alky compound, and (c) an external electron donor (ED) selected from non-aromatic diazo compounds.